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GX-A602
280-Watt full range car power amplifier
OWNER'S MANUAL
TROUBLESHOOTING
TECHNICAL SPECIFICATIONS
Released EU2014
CONTENTS
BLOCK DIAGRAM
2
BOM LIST
7
SCHEMATIC DIAGRAMS
9
Harman Consumer Group, Inc.
8500 Balboa Boulevard
Northridge, California 91329
Service Manual
Rev 0, 00/20XX
10
11
18
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Summary of Contents for JBL GX-A602
- Page 1 Service Manual GX-A602 280-Watt full range car power amplifier CONTENTS BLOCK DIAGRAM OWNER’S MANUAL BOM LIST TROUBLESHOOTING SCHEMATIC DIAGRAMS TECHNICAL SPECIFICATIONS Released EU2014 Harman Consumer Group, Inc. Rev 0, 00/20XX 8500 Balboa Boulevard Northridge, California 91329...
- Page 2 ) Wire 3. Route this wire to the amplifier’s location and 50 A Fuse (GX-A604/GX-A3001) connect it to the amplifier’s +12 V terminal. 30 A Fuse (GX-A602) Be sure to use appropriate grommets 18" (46 cm) whenever routing wires through the firewall or other sheet metal. IMPORTANT: Failure to adequately protect the positive wire from potential damage may result in a vehicle fire.
- Page 3 The speaker-level connectors on all GX-series amp models follow this wiring configuration. Follow the instructions in the previous sections, substituting the speaker-level connectors for the line-level connectors. gX-a602 speaker connectIons; 2-channel operatIon Minimum speaker impedance: 2 ohms (each) Connect the left and right speakers to the FL and FR (+) and (–) terminals.
- Page 4 Input connectIons: 2-channel operatIon Connect your source unit or processor’s line outputs as shown in the illustration below. L+L–R–R+ Line Outputs Source Unit See Set The Crossover Controls, on page 20, for information about setting the amplifier’s controls for 2-channel operation. To use the speaker level inputs instead of the line-level inputs, see Using The Speaker-Level Inputs, on page 12. www.jbl.com...
- Page 5 Bridged operation provides a single high-power channel for a subwoofer Minimum speaker impedance: 4 ohms Connect the subwoofer to the RL (+) and RR (–) terminals. NOTE: You can connect two 2-ohm subwoofers in series to maintain the required 4-ohm impedance for bridged operation. Fuse 25A...
- Page 6 Input connectIons: brIdged operatIon Connect your source unit or processor’s subwoofer line output to the amplifier’s left input, as shown in the illustration below. NOTE: Use a "Y"-adapter to connect the source unit to the amplifier’s left and right input jacks. L+L–R–R+ Subwoofer "Y"-Adapter Output Source Unit See Set The Crossover Controls, on page 20, for information about setting the amplifier’s controls for bridged operation. To use the speaker-level inputs instead of the line-level inputs, see Using The Speaker-Level Inputs, on page 12. www.jbl.com...
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Page 7: Troubleshooting
No sound (the amplifier’s Protection LED is red) • C onfirm that the vehicle’s electrical system is supplying between 9 V and 16 V DC to the amplifier. If the supply voltage is outside of this range, correct the condition before attempting to use the amplifier. • If the amplifier has overheated, wait until it has cooled down before attempting to use it again. • Disconnect all speakers from the amplifier and attempt to turn it on again: – I f the amplifier turns on (the Power LED is orange), there is a short circuit in one or more of the speaker wires. Correct all short circuits before reconnecting the speakers to the amplifier. – I f the amplifier does not turn on (the Protection LED is still red and the Power LED is off), contact your authorized JBL dealer for assistance. - Page 8 • Make sure the amplifier’s Crossover Filter switch for the distorted channels is set to HP. • Set the Crossover control for the distorted channels to a higher setting. • Check that the distortion is not originating from the vehicle audio system’s source unit. Sound in the subwoofer is distorted • (GX-A604, GX-A602): Set the Bass Boost switch to "OFF". • ( GX-A3001): While listening to bass-heavy music, turn the Bass Boost control all the way down, and then gradually increase it until the distortion begins to return. Reduce the Bass Boost control setting slightly to eliminate the distortion and leave it set there.
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Page 9: Specifications
GX-A604 GX-A602 GX-A3001 Max power (15.5 V, 1 kHz, 10% THD, 415W (15.5 V, 50 Hz, 10% THD, 435 W 280 W total ch, 2 ohms) 2 ohms) Rated power output @ 4 ohms 60 W x 4 60 W x 2 200 W x 1 Bridged power output 170 W x 2 170 W x 1 (4 ohms, 1% THD) THD+N at rated power <1% <1% <1% Signal-to-noise (2 V @ 4 ohms) >75 dB >75 dB >75 dB Effective damping factor (4 ohms) >50... - Page 10 JBL GX-A602 BLOCK DIAGRAM Class AB Audio Power Amplifier HP/LP pass variable crossover bass boost crossover INPUT SENS FLAT 0.2V-4V ＞ 10Hz 80Hz 40KHz L input input selector 80Hz 12dB/ oct 45Hz 0-12dB L -out 2Ω/4Ω HI IN Pitch 2.5mm...
- Page 11 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 020113000082 SMD 102/50V 0603 NPO ±5% C143P 020123000004 SMD 103/100V 0603 X7R ±10% TDK...
- Page 12 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 R134, R135, R136, R137, 010103000261 SMD 47Ω 1/10W ±1% 0603...
- Page 13 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 050203000058 DIP 2N5551 NPN TO-92 编带式 长电 Q107,Q207 DIP C1815GR 150MA 60V 400MW NPN TO-92...
- Page 14 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 DIP,2.5mH,ф0.7*8P*10.5Ts,JD2010 脚距18mm 030123000121 镀锡 040103000046 DIP 1N5404 DO-201AD 3A 400V 52mm...
- Page 15 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 R5, R24A, R24B, R25A, 010103000022 SMD 10KΩ 1/10W ±1% 0603...
- Page 16 Part no. Part name Unit AGXA602M0003 HARMAN,GX-A602,量产, 88AM03200519 GX-A602,功放板,DIP加工测试,量产, 88AM03100519 GX-A602,功放板,AI委外加工,量产, 88AM03000519 GX-A602,功放板,SMD外发,量产, ▲SMD,100KΩ,1/10W-0603,±1%,无 R61P, R83P, R154P 010103000024 C300, C301, C131, C132, C231, 020113000008 SMD 101/50V 0603 NPO ±5% C232, C302,C303 130223000018 DIP Pitch 2.54MM 4PIN 弯90度 CON1 040903000007 DIP φ3mm 红色发红光 高亮圆形 2P...
- Page 17 ★黑平光,油漆,CH-KQ9711/F-2417/CA-2865/F-2737 0,03 LS0101000086 圆头,3*6MM,无,镀黑锌,不需加硬 LP0202000004 SILICA GEL 5g/包 64*49MM,白色无纺布印蓝字 350*230*0.05MM（单层厚度）,印红色警告标和 BZ0302000004 环保标 打双孔 K=K,L465xW256xH265mm,GX- WX0302000480 A602专用麦头,HARMAN,GX-A602, 210m*140mm LP0102000813 ,单色,470页,黏 胶 ,封面封底105g双铜纸,内页80g 双 胶 纸,Harman,GX-A602/GX-A604/GX-A3001, 铜板纸,91*62MM 白底黑字,Harman,GX- TZ0302000827 A602,无变动, TZ0302000826 铜板纸,30*5MM,HARMAN,GX-A602,工程自制, BZ0302000007 90*60*0.05MM（单层厚度）,印绿色环保标 L238*W250*H112MM,BE加强坑,裱250克灰铜,四 CH0102000446 色一专,过光胶 , Harman,GX-A602, BZ0902000142 外径:L245*W90*H85MM, BZ0902000143 外径:L245*W90*H85MM,...
- Page 18 PLACE NO DATA DESCRIPTON DWG NO: 10uF/50V to 220uF/16V T3-01 07-23 PART NO: add 6.2K T3-01 07-23 PART NAME: Page Number: DRAW BY: DATA: 2012-07-27 AMP LCH-RCH UNIT: CHECKED BY: DATA: PRODUCT MODE: SIZE: APPROVED BY: GX-A602 REV :T3-01 DATA:...
- Page 19 CL333 -15V R16B R17B PLACE NO DATA DESCRIPTON DWG NO: add 105 T3-01 2013-07-15 PART NO: 104P New T3-01 2013-07-15 PART NAME: Page Number: DRAW BY: DATA: 2013-07-27 UNIT: CHECKED BY: DATA: PRODUCT MODE: SIZE: APPROVED BY: DATA: GX-A602 REV:T3-01...
- Page 20 PLACE NO DATA DESCRIPTON DWG NO: C123 103P New T1-03 2013-07-15 PART NO: C124 104P New T1-03 2013-07-15 PART NAME: Page Number: DRAW BY: DATA: 2013-07-27 power supply UNIT: CHECKED BY: DATA: PRODUCT MODE: SIZE: APPROVED BY: DATA: GX-A602 REV:T3-01...